A gantry crane assembly for implementing horizontal rotation of large components and a method of using the same

Abstract

The application discloses a gantry crane group for realizing horizontal rotation of large components and a use method thereof, and is applied to the technical field of fabricated buildings. According to the application, the two gantry cranes of the gantry crane group are caused to rotate by the same angle, then the two gantry cranes fix the two ends of the fabricated component respectively, meanwhile, the parallel movement of one of the gantry cranes is caused to move backward and drive one end of the fabricated component to slide to one side, then the gantry crane which moves backward is reset, so that the fabricated component can be arranged to horizontally rotate, the structure of the common double-gantry crane machine is improved, double-machine combined operation is realized, and the function of realizing accurate positioning of the horizontal rotation of the prefabricated component is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of prefabricated buildings, and particularly relates to a gantry crane group for realizing horizontal rotation of large components and a use method thereof. BACKGROUND

[0002] Prefabricated buildings transfer a large number of on-site operations to factories, process and manufacture components and accessories in factories, and transport them to construction sites for assembly and installation. Prefabricated buildings are rapidly promoted all over the world because of short construction period, low cost and high quality;

[0003] One of the main factors restricting the development of prefabrication is hoisting, especially hoisting under special circumstances, which directly determines whether the project can proceed. For example, under the condition of urban open excavation construction, the tunnel and subway station are passed through, the component hoisting is above the foundation pit, and the foundation pit generally has a cross brace. The prefabricated components transported from the factory are parallel to the foundation pit, and the installation component is perpendicular to the foundation pit. The component must be horizontally rotated by 90 degrees after being lifted, and then accurately positioned. The "M", "U", "W" and "n" type components of a half-ring of a standard two-way six-lane tunnel generally reach 150 tons. It is difficult to move in the working state of the crane, and it is almost impossible to do so due to the influence of the lifting radius, so the gantry crane is the best choice.

[0004] At present, a Chinese invention with publication number CN115417306A discloses an adjustable gantry crane device, which belongs to the technical field of building construction. The adjustable gantry crane device has a support and a hoisting trolley. The support includes a cross beam, a vertical support rod and an auxiliary support rod. The vertical support rod is arranged at the bottom of the cross beam and is in sliding connection with the cross beam. The auxiliary support rod is in rotary connection with the cross beam and the vertical support rod. The cross beam further includes a horizontal sliding rail mechanism for realizing the horizontal movement of the hoisting trolley. The hoisting trolley is arranged in sliding connection on the horizontal sliding rail mechanism. The bottom of the support is further provided with an adjusting mechanism. The support is fixedly connected with the adjusting mechanism through a fixing device. The bottom of the adjusting mechanism is fixedly provided with a base. The device can solve the problem that the traditional gantry crane is fixed at one position and cannot change the position, height and angle of the gantry crane. It can also solve the problem that the hoisting trolley of the traditional gantry crane slides unstably on the track, which easily causes position deviation.

[0005] However, after the prefabricated component is lifted, the component needs to be horizontally rotated by 90 degrees. The gantry crane is a single crane, which requires a high tonnage (more than 150 tons). Such gantry cranes are rare on the market, and the cost of rental is high. If a common double-door gantry crane is used, although the machinery is common, it cannot realize the horizontal rotation by 90 degrees. Therefore, we propose a gantry crane group for realizing horizontal rotation of large components. SUMMARY

[0006] The present application aims to provide a gantry crane group for realizing horizontal rotation of large components and a use method thereof, which has the advantages that the common double-gate gantry crane is improved in structure, thereby realizing double-machine combined operation, horizontal rotation of prefabricated components and accurate positioning, and the double-gate gantry crane can also be separated for independent use.

[0007] The above technical purpose of the present application is achieved by the following technical scheme: a gantry crane group for realizing horizontal rotation of large components, comprising two oppositely installed gantry cranes, wherein each of the gantry cranes is composed of a support assembly, a movement assembly and a hoisting assembly; the support assembly comprises a cross beam, and a tripod is installed on each side of the bottom of the cross beam; the movement assembly comprises two rollers installed at the bottom of the two tripods and rotationally connected with the tripods, a first servo motor is installed on each side of the tripod away from the other, a transmission shaft rotationally connected with the tripod is fixedly connected to each side of the roller close to the first servo motor, and a belt is sleeved with the transmission shaft at the output end of the first servo motor; a second servo motor is installed on each side of the cross beam, a first screw rod rotationally connected with the cross beam is installed at the output end of the second servo motor, and a first threaded sleeve is threadedly sleeved with the surface of the first screw rod, and a rotating piece rotationally connected with the tripod is welded at the bottom of the first threaded sleeve.

[0008] By the above technical scheme, the two gantry cranes of the gantry crane group are rotated by the same angle, then the two gantry cranes fix the two ends of the fabricated component respectively, the parallel gantry crane is moved backward to drive one end of the fabricated component to slide to one side, and then the gantry crane moved backward is reset, so that the fabricated component can be horizontally rotated and positioned accurately, the common double-gate gantry crane is improved in structure, thereby realizing double-machine combined operation, horizontal rotation of prefabricated components and accurate positioning, the cross beams of the two gantry cranes are rotated and then reset, the rollers are rotated by the first servo motor, the two gantry cranes are moved away from each other, and then the two gantry cranes are set to work normally, thereby achieving the purpose that the double-gate gantry crane can be separated for independent use, the gantry crane group can be continuously changed according to the construction situation on site, the use cost is reduced, and the practicality of the gantry crane group is improved.

[0009] The present application is further provided as follows: the hoisting assembly comprises an electric winding wheel arranged at the bottom of the cross beam, a sling is wound on the surface of the electric winding wheel, a fixing plate is arranged at the bottom of the sling, and a hook is rotationally connected with the bottom of the fixing plate.

[0010] By the above technical scheme, the sling is lowered by controlling the rotation of the electric winding wheel, then the hook is fixed with the rope on the fabricated component, and then the fabricated component can be lifted and lowered by the sling through the electric winding wheel.

[0011] The third servo motor is installed on one side of the bottom of the cross beam, the output end of the third servo motor is provided with a first bevel gear, the inside of the cross beam is rotatably connected with a second screw rod, one end of the second screw rod is provided with a second bevel gear meshing with the first bevel gear, and the surface of the second screw rod is provided with a second threaded sleeve fixedly connected with the electric winding wheel.

[0012] The third servo motor drives the first bevel gear and the second bevel gear to rotate and mesh, so that the second screw rod can rotate, and then the second threaded sleeve and the threads on the surface of the second screw rod are engaged to drive the electric winding wheel to move at the bottom of the cross beam.

[0013] The top of the fixed plate is symmetrically provided with four connecting pieces, and the top of each connecting piece is fixedly connected with a stay fixedly connected with a sling.

[0014] The above technical scheme can improve the stability of the assembly type component when the hook lifts the assembly type component.

[0015] The cross beam adopts a truss structure.

[0016] The above technical scheme improves the structural stability and carrying capacity of the gantry crane group and increases the service life.

[0017] The inside of the tripod is provided with a cross beam support.

[0018] The above technical scheme improves the stability of the cross beam support when the tripod supports the cross beam.

[0019] The inside of the tripod is provided with a cross beam support.

[0020] The above technical scheme limits the movement of the roller, so that the roller can only drive the tripod to translate.

[0021] The inside of the tripod is provided with a cross beam support.

[0022] The above technical scheme sets the safety distance between the two gantry cranes, and when the safety distance between the two gantry cranes is less than the set value, the alarm will alarm to prompt the operator.

[0023] A use method of a gantry crane group for realizing horizontal rotation of a large component, comprising the following steps:

[0024] Step 1: first, the first servo motor is started to work, the first servo motor drives the transmission shaft to rotate through the belt, so that the roller rotates and moves, and the first screw is driven to rotate by starting the second servo motor, so that the rotating part moves after the first threaded sleeve is engaged with the threads on the surface of the first screw, the tripod rotates in the rotating part, and the two tripods at the bottom of the cross beam move forward and backward respectively, so that the cross beams of the two gantry cranes rotate by the same angle;

[0025] Step 2: then the assembled component is transported to the bottom of the gantry group by the vehicle, the third servo motor is started to drive the first bevel gear to rotate and engage with the second bevel gear, so that the second screw can rotate, and the electric winding wheel can move at the bottom of the cross beam after the second threaded sleeve is engaged with the threads on the surface of the second screw, the assembled component is moved to the top of the vehicle, the electric winding wheel is controlled to rotate, the hook is lowered through the sling, and then the rope on the assembled component is fixed, and then the assembled component is lifted through the sling by starting the electric winding wheel again;

[0026] Step 3: the roller is driven to rotate by starting the first servo motor, so that one of the gantry cranes moves parallelly backward, and the end of the assembled component is slid to one side at the bottom of the parallelly backward gantry crane after the second screw and the second threaded sleeve are engaged, then the gantry crane that moves backward is reset by the roller, so that the assembled component can rotate horizontally, and the hook is lowered by the electric winding wheel;

[0027] Step 4: finally, the roller is driven to rotate by starting the first servo motor again, the tripods are moved forward and backward respectively, the rotating part is moved on both sides of the cross beam bottom by the second servo motor, the tripods rotate in the rotating part, the rotating angle of the cross beams of the two gantry cranes is reset, and the two gantry cranes are separated by the roller, so that the two gantry cranes can work normally.

[0028] In summary, the present application has the following advantages:

[0029] 1. The two gantry cranes of the gantry group are inclined, then the two ends of the assembled component are fixed by the two gantry cranes respectively, one of the gantry cranes moves parallelly backward and drives one end of the assembled component to slide to one side, then the gantry crane that moves backward is reset, so that the assembled component can be set to rotate horizontally, the structure of the ordinary double-gantry crane is improved, the double-machine combined operation is realized, and the function of the prefabricated component horizontal rotation is realized to achieve precise positioning.

[0030] 2, through the two gantry crane beam rotation angle after reset, and through the first servo motor drive roller rotation, make two gantry crane away from each other, separate normal gantry crane work set, so as to achieve the purpose of double door dragon can be separated for independent use, so as to can according to the site construction situation constantly change, reduce the use cost, improve the practicality of gantry crane group. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is the overall structure of the present application schematic diagram;

[0032] Figure 2 is a side of the present application structure partial view;

[0033] Figure 3 is the present application Figure 2 A place enlarged view;

[0034] Figure 4 is the present application Figure 2 B place enlarged view;

[0035] Figure 5 is the present application Figure 2 C place enlarged view;

[0036] Figure 6 is the present application structure plan view;

[0037] Figure 7 is the present application construction site schematic diagram;

[0038] Figure 8 is the present application construction site plan view.

[0039] Figure legend: 1, beam; 2, tripod; 3, roller; 4, the first servo motor; 5, belt; 6, transmission shaft; 7, the second servo motor; 8, the first screw; 9, the first threaded sleeve; 10, rotating part; 11, the third servo motor; 12, the first bevel gear; 13, the second screw; 14, the second bevel gear; 15, the second threaded sleeve; 16, electric winding wheel; 17, sling; 18, fixed plate; 19, hook; 20, cable; 21, connecting piece; 22, limit rail; 23, beam support; 24, alarm; 25, range finder. DETAILED DESCRIPTION

[0040] The present application will be further described below in conjunction with the drawings.

[0041] Example 1:

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 andFigure 8 The gantry crane group for realizing horizontal rotation of large components comprises two oppositely installed gantry cranes, and the gantry crane is composed of a support assembly, a movement assembly and a hoisting assembly, and can realize horizontal 90° rotation of large components and accurately install the components in place through the gantry crane group; the support assembly comprises a crossbeam 1, and a tripod 2 is installed at the bottom of each side of the crossbeam 1; the movement assembly comprises two rollers 3 installed at the bottom of the two tripods 2 and rotationally connected with the two tripods 2, a first servo motor 4 installed at the side away from each other of the two tripods 2, a transmission shaft 6 fixedly connected with the tripod 2 and rotationally connected with the roller 3 at the side close to the first servo motor 4 of the roller 3, and a belt 5 sleeved with the transmission shaft 6 and connected with the output end of the first servo motor 4; a second servo motor 7 is installed at each side of the crossbeam 1, a first screw rod 8 rotationally connected with the crossbeam 1 is installed at the output end of the second servo motor 7, a first threaded sleeve 9 is sleeved with the surface thread of the first screw rod 8, and a rotating part 10 rotationally connected with the tripod 2 is welded at the bottom of the first threaded sleeve 9; the same angle rotation of the two gantry cranes of the gantry crane group is realized, then the two gantry cranes are used to fix the two ends of the assembled component, the parallel gantry crane is moved backward and drives one end of the assembled component to slide to one side, then the backward moving gantry crane is reset, so that the assembled component can be horizontally and angularly rotated, the structure of the ordinary double-door gantry crane is improved, the double-machine combined operation is realized, and the function of realizing the horizontal rotation of the prefabricated component and accurately positioning is achieved.

[0043] Reference Figure 2 , Figure 5 The hoisting assembly comprises an electric winding wheel 16 arranged at the bottom of the crossbeam 1, the surface of the electric winding wheel 16 is wound with a sling 17, the bottom of the sling 17 is provided with a fixed plate 18, the bottom of the fixed plate 18 is rotationally connected with a hook 19, the hook 19 is lowered through the rotation of the electric winding wheel 16, then the hook 19 is fixed with the rope on the assembled component, and then the assembled component can be hoisted and lowered through the sling 17 by opening the electric winding wheel 16 again.

[0044] Reference Figure 2 , Figure 4 and Figure 5The third servo motor 11 is installed on one side of the bottom of the crossbeam 1, the output end of the third servo motor 11 is installed with the first bevel gear 12, the inside of the crossbeam 1 is rotationally connected with the second screw rod 13, one end of the second screw rod 13 is installed with the second bevel gear 14 which is engaged with the first bevel gear 12, the surface of the second screw rod 13 is threadedly sleeved with the second threaded sleeve 15 which is fixedly connected with the electric winding wheel 16, the first bevel gear 12 and the second bevel gear 14 are rotationally engaged by the third servo motor 11, so that the second screw rod 13 can rotate, then the electric winding wheel 16 can move at the bottom of the crossbeam 1 after the second threaded sleeve 15 is threadedly engaged with the surface of the second screw rod 13.

[0045] Reference Figure 2 、 Figure 5 The top of the fixed plate 18 is symmetrically installed with four connecting pieces 21, the top of the connecting piece 21 is fixedly connected with the inhaul cable 20 which is fixedly connected with the sling 17, the stability of the lifting hook 19 when lifting the fabricated component can be improved by setting the four symmetrically installed inhaul cables 20 and connecting pieces 21.

[0046] The use process is briefly described as follows: firstly, the first servo motor 4 is started to work, the first servo motor 4 drives the transmission shaft 6 to rotate through the belt 5, so that the roller 3 rotates and moves, at the same time, the first threaded sleeve 9 drives the rotating piece 10 to move after the first threaded sleeve 9 is threadedly engaged with the surface of the first screw rod 8 by starting the second servo motor 7 to drive the first screw rod 8 to rotate, the tripod 2 rotates in the inside of the rotating piece 10, then the two tripods 2 at the bottom of the crossbeam 1 are moved in the forward and backward directions by the roller 3, so that the crossbeams 1 of the two gantry cranes are rotated by the same angle; then the fabricated component is transported to the bottom of the gantry crane group by a vehicle, the third servo motor 11 is started to drive the first bevel gear 12 and the second bevel gear 14 to rotationally engage, so that the second screw rod 13 can rotate, the electric winding wheel 16 can move at the bottom of the crossbeam 1 after the second threaded sleeve 15 is threadedly engaged with the surface of the second screw rod 13, the fabricated component is fixed by controlling the electric winding wheel 16 to rotate, the lifting hook 19 is lowered through the sling 17, then the inhaul cable on the fabricated component is fixed, then the fabricated component is lifted again by starting the electric winding wheel 16 through the sling 17; the roller 3 is driven to rotate by starting the first servo motor 4, so that one of the gantry cranes is moved in parallel to the rear, at the same time, one end of the fabricated component is slid to one side at the bottom of the gantry crane which is moved in parallel to the rear by driving the second screw rod 13 and the second threaded sleeve 15 to threadedly engage after starting the third servo motor 11, then the gantry crane which is moved to the rear is reset again by the roller 3, so that the fabricated component can be rotated horizontally, and the fabricated component is lowered by driving the lifting hook 19 through the electric winding wheel 16.

[0047] Embodiment 2:

[0048] Reference Figure 1 , Figure 2 , Figure 3 , a gantry crane group for realizing horizontal rotation of large components, comprising two oppositely installed gantry cranes, the gantry crane being composed of a support assembly, a movement assembly and a hoisting assembly; the support assembly comprises a cross beam 1, the two gantry cranes are arranged in parallel, and the cross beam is inclined, and a tripod 2 is installed on each side of the bottom of the cross beam 1; the movement assembly comprises two rollers 3 installed at the bottom of the two tripods 2 and rotationally connected with the tripods 2, a first servo motor 4 is installed on the side of each of the two tripods 2 away from each other, a transmission shaft 6 rotationally connected with the tripod 2 is fixedly connected to the side of each of the two rollers 3 close to the first servo motor 4, and a belt 5 sleeved with the transmission shaft 6 is sleeved with the output end of the first servo motor 4; a second servo motor 7 is installed on each side of the cross beam 1, a first screw rod 8 rotationally connected with the cross beam 1 is installed on the output end of the second servo motor 7, a first threaded sleeve 9 is sleeved with the surface threads of the first screw rod 8, and a rotating piece 10 rotationally connected with the tripod 2 is welded to the bottom of the first threaded sleeve 9; the cross beam 1 of each of the two gantry cranes is rotated to a reset position, the roller 3 is rotated by the first servo motor 4, the two gantry cranes are separated from each other, and the two gantry cranes are set to work normally, so that the double-gate gantry crane can be used independently, the use cost can be reduced, and the practicability of the gantry crane group is improved.

[0049] Reference Figure 1 , Figure 2 , the cross beam 1 adopts a truss structure, the structural stability and the carrying capacity of the gantry crane group are improved, and the service life is increased.

[0050] Reference Figure 1 , a cross beam support 23 is installed in the tripod 2, the stability of the tripod 2 when supporting the cross beam 1 is improved.

[0051] Reference Figure 1 , Figure 2 , Figure 3 , the end of each of the two rollers 3 away from the transmission shaft 6 is provided with a limiting track 22, the movement of the roller 3 is limited, the roller 3 can only drive the tripod 2 to translate, and the included angle between the cross beam and the limiting track 22 is less than 50°.

[0052] Reference Figure 1 , a distance measuring instrument 25 is installed on the cross beam support 23 on the left side, and an alarm 24 is installed on the distance measuring instrument 25, the safety distance between the two gantry cranes can be set through the setting of the distance measuring instrument 25, and the alarm 24 will alarm when the safety distance between the two gantry cranes is less than the set value, so as to prompt the operator.

[0053] Brief description of the use process: by opening the first servo motor 4 again to drive the roller 3 to rotate, drive the tripod 2 to move forward and backward, at the same time, through the second servo motor 7 to drive the rotating part 10 to move on both sides of the bottom of the cross beam 1, make the tripod 2 rotate inside the rotating part 10, after rotating, the two gantry crane cross beams 1 will rotate to the original position, and through the roller 3 to drive them to move away from each other, so that the two gantry cranes can be separated to carry out normal gantry crane work.

[0054] The specific embodiment is only an explanation of the present application, which is not a limitation of the present application. Those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A gantry crane assembly for implementing horizontal rotation of a large component, comprising two oppositely mounted gantry cranes, characterized in that: The gantry crane is composed of a support assembly, a movement assembly and a hoisting assembly; The support assembly comprises a crossbeam (1), and triangular supports (2) are mounted on both sides of the bottom of the crossbeam (1); The movement assembly comprises two rollers (3) mounted at the bottom of the two triangular supports (2) and rotationally connected with the two triangular supports (2), first servo motors (4) are mounted on the sides, away from each other, of the two triangular supports (2), transmission shafts (6) rotationally connected with the triangular supports (2) are fixedly connected to the sides, close to the first servo motors (4), of the two rollers (3), and the output ends of the first servo motors (4) are sleeved with belts (5) sleeved with the transmission shafts (6); second servo motors (7) are mounted on both sides of the crossbeam (1), first screws (8) rotationally connected with the crossbeam (1) are mounted at the output ends of the second servo motors (7), first threaded sleeves (9) are threadedly sleeved on the surfaces of the first screws (8), and rotating members (10) rotationally connected with the triangular supports (2) are welded at the bottoms of the first threaded sleeves (9).

2. The portal crane assembly for implementing horizontal rotation of a large component according to claim 1, characterized in that: The hoisting assembly comprises an electric winding wheel (16) arranged at the bottom of the crossbeam (1), the surface of the electric winding wheel (16) winds a sling (17), a fixing plate (18) is arranged at the bottom of the sling (17), and a hook (19) is rotationally connected to the bottom of the fixing plate (18).

3. The portal crane assembly of claim 2, wherein: A third servo motor (11) is mounted on one side of the bottom of the crossbeam (1), a first bevel gear (12) is mounted at the output end of the third servo motor (11), a second screw (13) is rotationally connected in the crossbeam (1), a second bevel gear (14) meshing with the first bevel gear (12) is mounted at one end of the second screw (13), and a second threaded sleeve (15) fixedly connected with the electric winding wheel (16) is threadedly sleeved on the surface of the second screw (13).

4. The portal crane assembly of claim 2, wherein: Four connecting pieces (21) are symmetrically mounted at the top of the fixing plate (18), and a cable (20) fixedly connected with the sling (17) is fixedly connected to the top of each connecting piece (21).

5. The gantry crane assembly of claim 1, wherein: The crossbeam (1) adopts a truss structure.

6. The gantry crane assembly of claim 1, wherein: A crossbeam support (23) is mounted in the triangular support (2).

7. The gantry crane assembly of claim 1, wherein: Limiting rails (22) are arranged at the ends, away from the transmission shafts (6), of the two rollers (3).

8. The portal crane assembly of claim 6, wherein: A range finder (25) is mounted on the crossbeam support (23) on the left side, and an alarm (24) is mounted on the range finder (25).

9. The method of claim 3, wherein: The method comprises the following steps: Step 1: first, the first servo motor (4) is started to work, the first servo motor (4) drives the transmission shaft (6) to rotate through the belt (5), the roller (3) is rotated and moved, the first screw (8) is rotated by starting the second servo motor (7), the first threaded sleeve (9) is moved after being threadedly engaged with the surface of the first screw (8), the rotating member (10) is moved, the triangular support (2) is rotated in the rotating member (10), the two triangular supports (2) at the bottom of the crossbeam (1) are moved in the forward and backward directions through the roller (3), and the crossbeams (1) of the two gantry cranes are rotated by the same angle. Step 2: Then the assembled component is transported to the bottom of the gantry crane group by the vehicle, the third servo motor (11) is started to drive the first bevel gear (12) and the second bevel gear (14) to rotate and engage, so that the second screw rod (13) can rotate, and after the second threaded sleeve (15) is engaged with the threads on the surface of the second screw rod (13), the electric winding wheel (16) can move at the bottom of the cross beam (1), the electric winding wheel (16) is controlled to rotate, the hook (19) is lowered through the sling (17), then fixed with the rope on the assembled component, and then the assembled component is lifted through the sling (17) by starting the electric winding wheel (16) again; Step 3: The first servo motor (4) is started to drive the roller (3) to rotate, so that one of the gantry cranes moves parallelly backward, and the third servo motor (11) is started to drive the second screw rod (13) and the second threaded sleeve (15) to engage in threads, so that one end of the assembled component slides to one side at the bottom of the parallelly backward gantry crane, then the roller (3) is started again to drive the backward moving gantry crane to reset, so that the assembled component can rotate horizontally, and the hook (19) is lowered through the electric winding wheel (16); Step 4: Finally, the first servo motor (4) is started again to drive the roller (3) to rotate, and the tripod (2) is driven to move forward and backward, respectively, and the second servo motor (7) is started to drive the rotating member (10) to move on both sides of the bottom of the cross beam (1), so that the two gantry cranes rotate to reset the angle of the cross beam (1), and the roller (3) drives them to move away from each other, so that the two gantry cranes can be separated for normal gantry crane work.

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